Cosmetic composition stabilized higher oily part

Abstract

The present invention relates to a cosmetic composition having a high content of a stable oil phase, and more particularly to a cosmetic composition, which combines advantages of spreadability and softness of an oil-in-water type with emollient effect and water resistance of a water-in-oil type as a resulting of stabilizing, based on the total weight of the composition, 30-56 wt % of an oily component by multiple emulsification of W/O/W, and which provides skin moisturizing and softening effects by a large amount of oil components, and also which allows irritations caused by active ingredients to be relieved by a high content of the oily component.

The invention claimed is: 
     
       1. A cosmetic composition having a high content of a stable oil phase and being a W/O/W emulsion-type composition obtained by stabilizing, based on the total weight of the composition, 30-56 wt % of an oily component(s), the composition comprising a W/O emulsion part and an O/W phase as an outer phase, wherein the W/O emulsion part contains, based on the total weight of the W/O emulsion part, 1-8 wt % of a silicone-based emulsifier and a PEG-containing dipolyhydroxyalkylate-based emulsifier, 2.5-8 wt % of a hectorite-based oil thickener and a dextrin alkylate-based oil thickener, 0.1-5 wt % of a salt, and 20-45 wt % of a polar oil, and the O/W outer phase contains 0.2-2 wt % of gum based on the total weight of the composition,
 wherein the polar oil is at least one selected from the group consisting of cetyl ethyl hexanoate, octyl dodecyl myristate, di-C12-13 alkyl malate, pentaerythrityl tetraisostearate, pentaerythrityl tetraethylhexanoate, diisostearyl malate, isopropyl palmitate, C12-15 alkyl benzoate, dicaprylic carbonate, dicaprylic ether, and 2-octyldodecanol. 
 
     
     
       2. The cosmetic composition of  claim 1 , wherein the composition comprises, based on the total weight of the composition, 50-70 wt % of a W/O emulsion part and 30-50 wt % of an O/W outer phase. 
     
     
       3. The cosmetic composition of  claim 1 , wherein the silicone-based emulsifier is at least one selected from the group consisting of cetyl dimethicone copolyol, PEG-10 dimethicone, PEG-7 dimethicone, lauryl PEG-9 polydimethylsiloxyethyl dimethicone, lauryl polyglyceryl-3 polydimethylsiloxyethyl dimethicone, dimethicone PEG-10·15 crosspolymer/cyclosiloxane, dimethicone polyglycerine-3 crosspolymer/dimethicone, and cyclosiloxane/PEG.PPG-19.19 dimethicone. 
     
     
       4. The cosmetic composition of  claim 1 , wherein the PEG-containing dipolyhydroxyalkylate-based emulsifier is at least one selected from the group consisting of PEG-30 dipolyhydroxystearate, PEG-20 dipolyhydroxymyristate and PEG-40 dipolyhydroxypalmitate. 
     
     
       5. The cosmetic composition of  claim 1 , wherein the hectorite-based oil thickener is at least one selected from the group consisting of stearalkonium hectorite, disteardimonium hectorite, and quaternium-18 hectorite. 
     
     
       6. The cosmetic composition of  claim 1 , wherein the dextrin alkylate-based oil thickener is at least one selected from the group consisting of dextrin palmitate, dextrin myristate, and dextrin stearate. 
     
     
       7. The cosmetic composition of  claim 1 , wherein the salt is either sodium chloride or magnesium sulfate. 
     
     
       8. The cosmetic composition of  claim 1 , wherein the polar oil is cetyl ethyl hexanoate. 
     
     
       9. The cosmetic composition of  claim 1 , wherein the W/O emulsion part contains, based on the total weight of the W/O emulsion part, 60-80 wt % of an oily components. 
     
     
       10. The cosmetic composition of  claim 1 , wherein the gum is at least one selected from the group consisting of xanthan gum, carrageenans gum, guar gum, gellan gum and locust bean gum.